hi

i have a 98 uk turbo with v4 sti engine ,car has been mapped with power fc and has td 04 hybrid ran like a rocket for the first few months and has now lossing boost was mapped for 1.45 bar but now only accieves about 1.25-1.30 bar have checked wastegate and all the hoses and can find no probs.car is still well quick but it has been annoying me why its lossing boost .is booked in where remapped was done but in mean time what to find out problem can you help

cheers

 

anyone!!

 

[stupid question] have you fitted an a new intercooler or even a different dv?[/stupid question]
Maybe the actuator needs adjusting?
Just a few ideas.

 

no has sti v4 intercooler and has been ther since got car and has bailey dv am going to put standard dv and check if it is that but am a mith to think of anything else have adjusted accutator but just holds boost for longer no drop off over 6000 rpm

HELP ME PLEASE!!!!!!!!!!

 

baileys dv's have been known to leak. It happened on one I had on my punto.

 

anyone!!

 

changed dv back to standard but still down on boost .thanks joey turbo but is there anyone who can give me some more advice, this is really starting to wind me up.HELP!!!!!!

 

does it feel down on power?

could be your boost gauge miss reading or have a possible leak from there.....

Definately seems like a leak of some sort to be honest!! double check all hoses and also the small vac pipes to your boost solenoid.